Cracks in Bar The Following Data Represent the Number of Small Cracks Per

question 157

Essay

Cracks in Bar
The following data represent the number of small cracks per bar for a sample of eight steel bars: 4, 6, 10, 1, 3, 1, 25, and 8.
-Refer to Cracks in Bar statement. What is the average number of small cracks per bar?

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Definitions:

Mean

The mean is the average of a set of numbers, calculated by adding them all together and then dividing by the count of those numbers.

Z-statistic

A statistical metric that measures the number of standard deviations a data point is from the mean, used in hypothesis testing.

Z-test

A statistical assessment employed to ascertain if there's a difference between the means of two populations when variances are recognized and the sample size is substantial.

µ = 145

A statement indicating that the mean (average) of a particular set of data or population is equal to 145.